7 files changed, 66 insertions, 162 deletions

diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index cc058dc..5e14de3 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -26,7 +26,6 @@
 #include <linux/resource.h>
 #include <linux/times.h>
 #include <linux/utsname.h>
-#include <linux/timex.h>
 #include <linux/smp.h>
 #include <linux/smp_lock.h>
 #include <linux/sem.h>
@@ -705,79 +704,6 @@ asmlinkage long sys32_sendfile64(int out_fd, int in_fd,
 	return ret;
 }
 
-/* Handle adjtimex compatibility. */
-
-struct timex32 {
-	u32 modes;
-	s32 offset, freq, maxerror, esterror;
-	s32 status, constant, precision, tolerance;
-	struct compat_timeval time;
-	s32 tick;
-	s32 ppsfreq, jitter, shift, stabil;
-	s32 jitcnt, calcnt, errcnt, stbcnt;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-	s32  :32; s32  :32; s32  :32; s32  :32;
-};
-
-extern int do_adjtimex(struct timex *);
-
-asmlinkage long sys32_adjtimex(struct timex32 __user *utp)
-{
-	struct timex txc;
-	int ret;
-
-	memset(&txc, 0, sizeof(struct timex));
-
-	if(get_user(txc.modes, &utp->modes) ||
-	   __get_user(txc.offset, &utp->offset) ||
-	   __get_user(txc.freq, &utp->freq) ||
-	   __get_user(txc.maxerror, &utp->maxerror) ||
-	   __get_user(txc.esterror, &utp->esterror) ||
-	   __get_user(txc.status, &utp->status) ||
-	   __get_user(txc.constant, &utp->constant) ||
-	   __get_user(txc.precision, &utp->precision) ||
-	   __get_user(txc.tolerance, &utp->tolerance) ||
-	   __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
-	   __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
-	   __get_user(txc.tick, &utp->tick) ||
-	   __get_user(txc.ppsfreq, &utp->ppsfreq) ||
-	   __get_user(txc.jitter, &utp->jitter) ||
-	   __get_user(txc.shift, &utp->shift) ||
-	   __get_user(txc.stabil, &utp->stabil) ||
-	   __get_user(txc.jitcnt, &utp->jitcnt) ||
-	   __get_user(txc.calcnt, &utp->calcnt) ||
-	   __get_user(txc.errcnt, &utp->errcnt) ||
-	   __get_user(txc.stbcnt, &utp->stbcnt))
-		return -EFAULT;
-
-	ret = do_adjtimex(&txc);
-
-	if(put_user(txc.modes, &utp->modes) ||
-	   __put_user(txc.offset, &utp->offset) ||
-	   __put_user(txc.freq, &utp->freq) ||
-	   __put_user(txc.maxerror, &utp->maxerror) ||
-	   __put_user(txc.esterror, &utp->esterror) ||
-	   __put_user(txc.status, &utp->status) ||
-	   __put_user(txc.constant, &utp->constant) ||
-	   __put_user(txc.precision, &utp->precision) ||
-	   __put_user(txc.tolerance, &utp->tolerance) ||
-	   __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
-	   __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
-	   __put_user(txc.tick, &utp->tick) ||
-	   __put_user(txc.ppsfreq, &utp->ppsfreq) ||
-	   __put_user(txc.jitter, &utp->jitter) ||
-	   __put_user(txc.shift, &utp->shift) ||
-	   __put_user(txc.stabil, &utp->stabil) ||
-	   __put_user(txc.jitcnt, &utp->jitcnt) ||
-	   __put_user(txc.calcnt, &utp->calcnt) ||
-	   __put_user(txc.errcnt, &utp->errcnt) ||
-	   __put_user(txc.stbcnt, &utp->stbcnt))
-		ret = -EFAULT;
-
-	return ret;
-}
-
 #ifdef CONFIG_SYSCTL
 struct __sysctl_args32 {
 	u32 name;
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index 50e8013..199da68 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -551,10 +551,10 @@ sys32_newuname_wrapper:
 	llgtr	%r2,%r2			# struct new_utsname *
 	jg	s390x_newuname		# branch to system call
 
-	.globl  sys32_adjtimex_wrapper 
-sys32_adjtimex_wrapper:
-	llgtr	%r2,%r2			# struct timex_emu31 *
-	jg	sys32_adjtimex		# branch to system call
+	.globl  compat_sys_adjtimex_wrapper
+compat_sys_adjtimex_wrapper:
+	llgtr	%r2,%r2			# struct compat_timex *
+	jg	compat_sys_adjtimex	# branch to system call
 
 	.globl  sys32_mprotect_wrapper 
 sys32_mprotect_wrapper:
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
index 896d39d..06a3fbc 100644
--- a/arch/s390/kernel/debug.c
+++ b/arch/s390/kernel/debug.c
@@ -204,16 +204,13 @@ debug_areas_alloc(int pages_per_area, int nr_areas)
 			goto fail_malloc_areas2;
 		}
 		for(j = 0; j < pages_per_area; j++) {
-			areas[i][j] = (debug_entry_t*)kmalloc(PAGE_SIZE,
-						GFP_KERNEL);
+			areas[i][j] = kzalloc(PAGE_SIZE, GFP_KERNEL);
 			if(!areas[i][j]) {
 				for(j--; j >=0 ; j--) {
 					kfree(areas[i][j]);
 				}
 				kfree(areas[i]);
 				goto fail_malloc_areas2;
-			} else {
-				memset(areas[i][j],0,PAGE_SIZE);
 			}
 		}
 	}
@@ -249,14 +246,12 @@ debug_info_alloc(char *name, int pages_per_area, int nr_areas, int buf_size,
 	rc = (debug_info_t*) kmalloc(sizeof(debug_info_t), GFP_KERNEL);
 	if(!rc)
 		goto fail_malloc_rc;
-	rc->active_entries = (int*)kmalloc(nr_areas * sizeof(int), GFP_KERNEL);
+	rc->active_entries = kcalloc(nr_areas, sizeof(int), GFP_KERNEL);
 	if(!rc->active_entries)
 		goto fail_malloc_active_entries;
-	memset(rc->active_entries, 0, nr_areas * sizeof(int));
-	rc->active_pages = (int*)kmalloc(nr_areas * sizeof(int), GFP_KERNEL);
+	rc->active_pages = kcalloc(nr_areas, sizeof(int), GFP_KERNEL);
 	if(!rc->active_pages)
 		goto fail_malloc_active_pages;
-	memset(rc->active_pages, 0, nr_areas * sizeof(int));
 	if((mode == ALL_AREAS) && (pages_per_area != 0)){
 		rc->areas = debug_areas_alloc(pages_per_area, nr_areas);
 		if(!rc->areas)
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index da6fbae..4a0f5a1 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -76,17 +76,17 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
 /*
  * Need to know about CPUs going idle?
  */
-static struct notifier_block *idle_chain;
+static ATOMIC_NOTIFIER_HEAD(idle_chain);
 
 int register_idle_notifier(struct notifier_block *nb)
 {
-	return notifier_chain_register(&idle_chain, nb);
+	return atomic_notifier_chain_register(&idle_chain, nb);
 }
 EXPORT_SYMBOL(register_idle_notifier);
 
 int unregister_idle_notifier(struct notifier_block *nb)
 {
-	return notifier_chain_unregister(&idle_chain, nb);
+	return atomic_notifier_chain_unregister(&idle_chain, nb);
 }
 EXPORT_SYMBOL(unregister_idle_notifier);
 
@@ -95,7 +95,7 @@ void do_monitor_call(struct pt_regs *regs, long interruption_code)
 	/* disable monitor call class 0 */
 	__ctl_clear_bit(8, 15);
 
-	notifier_call_chain(&idle_chain, CPU_NOT_IDLE,
+	atomic_notifier_call_chain(&idle_chain, CPU_NOT_IDLE,
 			    (void *)(long) smp_processor_id());
 }
 
@@ -103,7 +103,7 @@ extern void s390_handle_mcck(void);
 /*
  * The idle loop on a S390...
  */
-void default_idle(void)
+static void default_idle(void)
 {
 	int cpu, rc;
 
@@ -116,7 +116,8 @@ void default_idle(void)
 		return;
 	}
 
-	rc = notifier_call_chain(&idle_chain, CPU_IDLE, (void *)(long) cpu);
+	rc = atomic_notifier_call_chain(&idle_chain,
+			CPU_IDLE, (void *)(long) cpu);
 	if (rc != NOTIFY_OK && rc != NOTIFY_DONE)
 		BUG();
 	if (rc != NOTIFY_OK) {
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 24f62f1..0a04e4a 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -78,8 +78,6 @@ extern int _text,_etext, _edata, _end;
 
 #include <asm/setup.h>
 
-static char command_line[COMMAND_LINE_SIZE] = { 0, };
-
 static struct resource code_resource = {
 	.name  = "Kernel code",
 	.start = (unsigned long) &_text,
@@ -335,63 +333,38 @@ add_memory_hole(unsigned long start, unsigned long end)
 	}
 }
 
-static void __init
-parse_cmdline_early(char **cmdline_p)
+static int __init early_parse_mem(char *p)
+{
+	memory_end = memparse(p, &p);
+	return 0;
+}
+early_param("mem", early_parse_mem);
+
+/*
+ * "ipldelay=XXX[sm]" sets ipl delay in seconds or minutes
+ */
+static int __init early_parse_ipldelay(char *p)
 {
-	char c = ' ', cn, *to = command_line, *from = COMMAND_LINE;
 	unsigned long delay = 0;
 
-	/* Save unparsed command line copy for /proc/cmdline */
-	memcpy(saved_command_line, COMMAND_LINE, COMMAND_LINE_SIZE);
-	saved_command_line[COMMAND_LINE_SIZE-1] = '\0';
+	delay = simple_strtoul(p, &p, 0);
 
-	for (;;) {
-		/*
-		 * "mem=XXX[kKmM]" sets memsize
-		 */
-		if (c == ' ' && strncmp(from, "mem=", 4) == 0) {
-			memory_end = simple_strtoul(from+4, &from, 0);
-			if ( *from == 'K' || *from == 'k' ) {
-				memory_end = memory_end << 10;
-				from++;
-			} else if ( *from == 'M' || *from == 'm' ) {
-				memory_end = memory_end << 20;
-				from++;
-			}
-		}
-		/*
-		 * "ipldelay=XXX[sm]" sets ipl delay in seconds or minutes
-		 */
-		if (c == ' ' && strncmp(from, "ipldelay=", 9) == 0) {
-			delay = simple_strtoul(from+9, &from, 0);
-			if (*from == 's' || *from == 'S') {
-				delay = delay*1000000;
-				from++;
-			} else if (*from == 'm' || *from == 'M') {
-				delay = delay*60*1000000;
-				from++;
-			}
-			/* now wait for the requested amount of time */
-			udelay(delay);
-		}
-		cn = *(from++);
-		if (!cn)
-			break;
-		if (cn == '\n')
-			cn = ' ';  /* replace newlines with space */
-		if (cn == 0x0d)
-			cn = ' ';  /* replace 0x0d with space */
-		if (cn == ' ' && c == ' ')
-			continue;  /* remove additional spaces */
-		c = cn;
-		if (to - command_line >= COMMAND_LINE_SIZE)
-			break;
-		*(to++) = c;
+	switch (*p) {
+	case 's':
+	case 'S':
+		delay *= 1000000;
+		break;
+	case 'm':
+	case 'M':
+		delay *= 60 * 1000000;
 	}
-	if (c == ' ' && to > command_line) to--;
-	*to = '\0';
-	*cmdline_p = command_line;
+
+	/* now wait for the requested amount of time */
+	udelay(delay);
+
+	return 0;
 }
+early_param("ipldelay", early_parse_ipldelay);
 
 static void __init
 setup_lowcore(void)
@@ -580,9 +553,26 @@ setup_arch(char **cmdline_p)
 	       "We are running native (64 bit mode)\n");
 #endif /* CONFIG_64BIT */
 
+	/* Save unparsed command line copy for /proc/cmdline */
+	strlcpy(saved_command_line, COMMAND_LINE, COMMAND_LINE_SIZE);
+
+	*cmdline_p = COMMAND_LINE;
+	*(*cmdline_p + COMMAND_LINE_SIZE - 1) = '\0';
+
         ROOT_DEV = Root_RAM0;
+
+	init_mm.start_code = PAGE_OFFSET;
+	init_mm.end_code = (unsigned long) &_etext;
+	init_mm.end_data = (unsigned long) &_edata;
+	init_mm.brk = (unsigned long) &_end;
+
+	memory_end = memory_size;
+
+	parse_early_param();
+
 #ifndef CONFIG_64BIT
-	memory_end = memory_size & ~0x400000UL;  /* align memory end to 4MB */
+	memory_end &= ~0x400000UL;
+
         /*
          * We need some free virtual space to be able to do vmalloc.
          * On a machine with 2GB memory we make sure that we have at
@@ -591,17 +581,9 @@ setup_arch(char **cmdline_p)
         if (memory_end > 1920*1024*1024)
                 memory_end = 1920*1024*1024;
 #else /* CONFIG_64BIT */
-	memory_end = memory_size & ~0x200000UL;  /* detected in head.s */
+	memory_end &= ~0x200000UL;
 #endif /* CONFIG_64BIT */
 
-	init_mm.start_code = PAGE_OFFSET;
-	init_mm.end_code = (unsigned long) &_etext;
-	init_mm.end_data = (unsigned long) &_edata;
-	init_mm.brk = (unsigned long) &_end;
-
-	parse_cmdline_early(cmdline_p);
-	parse_early_param();
-
 	setup_memory();
 	setup_resources();
 	setup_lowcore();
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 7dbe00c..343120c 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -665,7 +665,9 @@ __cpu_up(unsigned int cpu)
         cpu_lowcore->current_task = (unsigned long) idle;
         cpu_lowcore->cpu_data.cpu_nr = cpu;
 	eieio();
-	signal_processor(cpu,sigp_restart);
+
+	while (signal_processor(cpu,sigp_restart) == sigp_busy)
+		udelay(10);
 
 	while (!cpu_online(cpu))
 		cpu_relax();
@@ -799,9 +801,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
          */
 	print_cpu_info(&S390_lowcore.cpu_data);
 
-        for(i = 0; i < NR_CPUS; i++) {
-		if (!cpu_possible(i))
-			continue;
+        for_each_possible_cpu(i) {
 		lowcore_ptr[i] = (struct _lowcore *)
 			__get_free_pages(GFP_KERNEL|GFP_DMA, 
 					sizeof(void*) == 8 ? 1 : 0);
@@ -831,7 +831,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 #endif
 	set_prefix((u32)(unsigned long) lowcore_ptr[smp_processor_id()]);
 
-	for_each_cpu(cpu)
+	for_each_possible_cpu(cpu)
 		if (cpu != smp_processor_id())
 			smp_create_idle(cpu);
 }
@@ -868,7 +868,7 @@ static int __init topology_init(void)
 	int cpu;
 	int ret;
 
-	for_each_cpu(cpu) {
+	for_each_possible_cpu(cpu) {
 		ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu, NULL);
 		if (ret)
 			printk(KERN_WARNING "topology_init: register_cpu %d "
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index 7c88d85..2f56654 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -132,7 +132,7 @@ SYSCALL(sys_clone_glue,sys_clone_glue,sys32_clone_glue)		/* 120 */
 SYSCALL(sys_setdomainname,sys_setdomainname,sys32_setdomainname_wrapper)
 SYSCALL(sys_newuname,s390x_newuname,sys32_newuname_wrapper)
 NI_SYSCALL							/* modify_ldt for i386 */
-SYSCALL(sys_adjtimex,sys_adjtimex,sys32_adjtimex_wrapper)
+SYSCALL(sys_adjtimex,sys_adjtimex,compat_sys_adjtimex_wrapper)
 SYSCALL(sys_mprotect,sys_mprotect,sys32_mprotect_wrapper)	/* 125 */
 SYSCALL(sys_sigprocmask,sys_sigprocmask,compat_sys_sigprocmask_wrapper)
 NI_SYSCALL							/* old "create module" */